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1.How old did the article say the question was about eyelashes?
a) 27,000 years old
b) four millennia
c) 27 years old
d) age-old
2.How many different mammals did the scientists look at?
a) 21
b) 22
c) 23
d) 24
3.What special machine was made to test eyelashes?
a) a mascara measurer
b) a laser
c) a wind tunnel
d) a 3D eyelash printer
4.What did David Hu conclude about the function of eyelashes?
a) it protects eyes from drying out
b) they are to attract partners
c) very little
d) they help us sleep
5.What was the ratio of eyelash length and eye width found in mammals?
a) a fifth
b) a quarter
c) a third
d) three-eighths
6.What triggered Dr Hu to start his investigation?
a) his own blinking
b) his baby daughter
c) a magazine article
d) an eye operation
7.What did Hu's baby keep doing to her eyelids to make him wonder?
a) closing them
b) rubbing them
c) keeping them open
d) batting them
8.What did one hypothesis say was triggered by eyelashes?
a) the blink reflex
b) the butterfly effect
c) colds
d) shortsightedness
9.By how much is evaporation in the eye reduced by eyelashes?
a) 50%
b) 60%
c) 70%
d) 80%
10.What did a colleague say Hu had a talent for seeing?
a) past the obvious
b) what others had not seen
c) eyelashes
d) the future
